Home / 1,964.72-2,710.40-1,178.76

Finding the Fourth Proportional to 1,964.72, 2,710.40 and 1,178.76

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Solution

The fourth proportional to 1,964.72, 2,710.40 and 1,178.76 is: 1,626.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,964.72 : 2,710.40 = 1,178.76 : x
  2. Step 2: Convert to fraction form
    1,964.72/2,710.40 = 1,178.76/x
  3. Step 3: Cross multiply
    1,964.72x = 2,710.40 × 1,178.76
  4. Step 4: Simplify right side
    1,964.72x = 3,194,911.10
  5. Step 5: Solve for x
    x = 3,194,911.10/1,964.72
  6. Step 6: Final answer
    x = 1,626.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.